91742678 has 8 divisors (see below), whose sum is σ = 144856920. Its totient is φ = 43457040.

The previous prime is 91742663. The next prime is 91742683. The reversal of 91742678 is 87624719.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×91742678² = 16833437933223368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1207103 + ... + 1207178.

It is an arithmetic number, because the mean of its divisors is an integer number (18107115).

Almost surely, 2^91742678 is an apocalyptic number.

91742678 is a deficient number, since it is larger than the sum of its proper divisors (53114242).

91742678 is a wasteful number, since it uses less digits than its factorization.

91742678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2414302.

The product of its digits is 169344, while the sum is 44.

The square root of 91742678 is about 9578.2398174195. The cubic root of 91742678 is about 451.0144652139.

The spelling of 91742678 in words is "ninety-one million, seven hundred forty-two thousand, six hundred seventy-eight".